Method of rolling



July 21 1925.

E.- E". I SLICK METHOD OF ROLLING Filed July 24. 1922 INVENTOR e e e tot m m er wound a St t he y ether el ielth ush, the" inveht n. mey ooments, infixed relatiex t ,theue ht rv o he t se embe s mermgv .e eul te Work-supporting m mben orithe hrust.

Patented July 21, 1925.

EDWIN E. :SLIGK, A015 1 PITTSBURGH, PENNSYLVANIA.

m n al) r Applieationefiled July 24 To all whomz't may concern:

Be it known that I, E IN EgSLreig, a resident of, Pittsburgh,AllegheriyCou-nty, Pennsylvania, haveinventecl a new and usefulImprovement in Methods of Rolling, of which the followinglis a full,clear, and exact description, reference being had toithe accompanyingdrawings, forming part of is: sp cific ion, i Wh h Figure 1 is asicleelevationtaken partly in seotionof one type of machinearrarigecl tocarry out my p oce s ;.and

Figure 2 is a plan View of the ested rollers and cage. 7

The present invention relates to circular rclling,;ang1 is designed toprqvidefl new and improiredmethogl therefor. In carrying out my improved7 n etl ocl,v 1 support a blank on ork-supporting member, and p oy e t sm m eren imp-ex ati axis and roll the blank in annular zone z n s by mens o rolling, l ments b tween the members holding the rollirrgele'paths relativeto the blank; I mayvrotate;

embe O h. l pre eiee ly h ldrltih l l ing elem nts, in the seine p eitim l ire o o the center of otat en by m ans of a cageor holdin g deviceThe rollir gele meets e e P ferably i p n er tem elt cage is arranged tohold them in the. same,

carriecl grl for atleast 911e, of thelmfimbirs" mend. t e ed e ie- 1 iThe invention is speeiallydesigued for p i g hepe t iblenkscut irqm .a'p et h ehh e my be uni. squere 91' i used. for, imparting other crosssectional shapes by the circular rolling rrlethool, The; blank may beeither, of the same thickness may be o f cliflerentshapes j I will w d sri e nemeehine.for eeer ng p m ihve mt s b ng repea 1 n d f r l gi epeed l ile nksnz l Wheel bodies.

erri g t 1e. m ehiee 'i' ustr ted, i h e o the d ew ge, the b a k w i wzh e reted l see previeuelr heetedwz-fl h plate or sheet metal hglisjksearried en a; Work support 2. This work supp ortsflis prefhlr ie ed,,eeehewmin .Ei ueie i it s and. 10, w i h-aresupp rted e he h e 8 1 mail92a,. S r al NO- W 3 clesired to give ,a taperto-the blank, The

e W kfhye th ust Pl e. 6:, h c i r jtateqll relatively to the. Worksupport 2. The

.1 fell rs3 e e .l el e y m nte in e were,v n-J d lhd geneizallyjbyreference numeral 5. Thls cage comprises two semicircular, blocks 6, thennere g e o Which/ e n a to ha dened s e l t W hsta t e Wear Ef m therollers,,, The, thr l stvpiece 4 and cage 5- are'hejlcljon the ,head Sbyinear slof rings 9 .by meanswo bolt 1 h I g-9 ha countersunk h 'l hleser t anges 2 e the lpolts which support it. Threaded v0n eu ew deaevt eb l sll e n ts 1 whichsupport the, ringlO. By removing thenuts 13,-the ring 10 can loe taken off. and the, cagefi released Then if it isdesired-to ekeefi thev rustp e e A, en be take fihy loo ening t e nuts Aceptering stuclulfil centers the thrust :vp'lete on the h e cfi an a P 1holds th thrust plate and head. against relativerotations, The cage fiis .held, ,s0i thatit can freelyrotate in its supportingring 1 0Sufficie-Iit'ejlearahce is provided between the cage 5 and thewwork sothat the cage may i tur f eely,relative e e e a ive emm j l e t ells Wil t te e 1e The Work-supporting plateQ is made of hardened steelorwcast Ollill6d= iro nhand. is

supported one heacl, 17.= It is centered on ,--the,head hyrneans-of ahollow studv18,- and is preventeqlv from. rotating relatively to the.headll8abymeans iota piu19. Asp ringspe ed ve udfi ects thre gh thework 7 s p-Pelt .2 (and mm t e h dr l d,-

1 t enter e thehl k e t e Purp se e ena ,a ste ri g heab ehkeh-t ew l ephemro g u .0 :e v ryin t icknes e fiat 1 1 1132912 eheetmetal ic liscwith a hole;

refl t r gh it e receive t e: s u 1 :2

y: ,J' lhe blenk mayl be of uniform gauge and is er in diameternthgmthe, completed 5 tapelte d e mi-nt w ch. i i ed- The lil llik may.howeyer h of s ap s. o he h n pire laat Fe fle emp ey t might he square.

Moreover, it ,n ed qt necessarily be drilled for the-ewe 2 but may e sid, in w case the centeri g st ud is JIDQJSCQSSiLlY.

D ing the i r ll g ieperation, the? t o hea i .ihlenkie rolled. into aper d iseibym e r f p urel y o ro e s p se ga s 8 and 17 are thrustagainst each other under pressure and are relatively rotated so that therollers 3 roll around and over the top of the work. The completed blankafter it is rolled is indicated by reference numeral 25. The rollers 3are loosely mounted in the cage and are trictionally driven by contactwith the relatively moving thrust plate l and the blank 25.

As shown in Figure 1, the rollers at each side of the axis of rotationare preferably so spaced that the rollers at one side will, not trackwith the rollers on the other side. This prevents ridges from beingrolled in the work at points between the separate rollers. As shown inthis figure, the two series of rollers on opposite sides of the centerare supported by a spacer 26, formed ing and forming ridges in the work.

' rollers.

on the blocks 6 of the roller-supporting cage. This spacer block 26 is alittle to one side of the axis of rotation. As shown in the drawingsthere are nine rollers at the left of the axis of rotation and eight atthe right. This arrangement insures that the radius from the axis ofrotation to the point of separation between two rollers at one side ofthe center is equal to the radius from the axis of rotation to themiddle of a roller on the opposite side; this, as heretofore explained,preventing the rollers from track- 7 I As shown in the drawings, the endfaces of the rollers 3 7 this bulging being somewhatexaggerated in thedrawings for the purpose of illustration. The rollers, therefore, comein end to end contact only at their centers, so that there is,

substantially no friction between adjacent Thus each roller is permittedto assume its own speed and is not subjected to frictional drag by anadjacent roller which is moving slower or faster.

It is found to be advantageous in work of this character to employrollers of small diameter, because the small diameter roller has asmaller surface of rolling contact with the work. Therefore, the thrustof the rollers against the work is concentrated in a smaller area andthe blank rolled out more efliciently than would be the case if largerdiameter rollers were used. Since the rollers 3 are subjected to -aconsiderable thrust, it is desirable that they be made solid. The use ofthe cage 6 permits small solid rollers to be used. The cage holds therollers in alignment and prevents any roller from moving sidewise out ofits end to end alignment with the other rollers. lVith the cage it isunnecessary. to bore the rollers to receive any shaft for holding themin alignment or supporting them, thus permitting the rollers to be madesolid and of amaximum strength.

The head 8 is mounted in the cross pediment of the machine so as torotate. shown in "the drawings, the

are slightly bulged at the center,

As I head 8 is pro vided with a "erti 'al shaft 30, extending through abushed bearing 31, while a plate 32 forms a vertical thrust bearing torthe head 8. The bearings are lubricated through the oil groove 33.Splined to the head oi the shaft is a gear ll, which is driven by apinion 35. The pinion is carried on a. shaft which, at its lower end,has a bevel gear 3'7, driven by a bevel gear on a shaft 39, which isdriven through the reduction gearing 40 by electric motor ll.

The head 1 which carries the work support 2 is vertically movable and isforced by hydraulic pressure against the rollers 23. The head 1? has aplunger 4-5, which enters hydraulic cylinder 46, supplied with fluidunder pressure through a pipe 4L7. An adjustable collar 48 on plunger4-5 limits its upward niovement. A pin 51 extends from the head 17 intoa stationary part of the machine to prevent the head 17 from rotating.

In carrying out my improved method with this machine, the heated blankis placed on the work support 2 and then fluid under pressure isadmitted into the h v draulic cylinder so as to force the work supportand work up against the rollers 3. The head 8 with the thrust plate l isrotated as the work support is moved up under hydraulic pressure so thatthe blank is rolled out under pressure, forming in this case a tapereddisc of larger diameter.

During the operation, the rollers move in circular or annular pathsrelative to and from the blank and are held in fixed relation to thecenter of rotation and also preferably in the same relative angularposi-' 'tions, the rotation occurring around a fixed axis. During thisoperation, the blank is spread and rolled to the desired shape, in

this case, the blank being tapered toward its edge.

lVh le the heads 8 and 17 are shown as rotating relatively around avertical axis, it

is obvious that such axis of rotation might be horizontal or inclined ifmore convenient in the particular machine to be built. lVhile themachine is illustrated as operating upon circular blanks to roll theminto tapered disks, other blanks may be used and other shapes rolled.For example, a square blank may be used and a shape rolled from it andthe projecting corners trimmed oil". it desired. Instead of a taperedshape, other shapes may berolled and the rolling may be restricted to amore limited annular area than that indicated in the drawing.

My improved method may be carried out with other types of apparatus,such for example, as the preterred forms of apparatus shown in PatentNumber 1,423,268 granted to me July 18, 1922,

I claim: '1. In the method of rolling, the steps coniii sisting insupporting a blank on a Worksupporting member, forcing against the blanka system of rolling elements, imparting relative rotation to the blankand rolling elements around a fixed axis, and holding the rollingelements in a cage in fixed relation relative to the center of rotation,substantially as described.

2. In the method of rolling, the steps consisting of supporting a blankon a Work supporting member, forcing against the same a set of rollers,imparting relative rotation to the rollers and blank around a fixedaxis, and holding the rollers in a cage in fixed relation to the centerof rotation and in the same relative radial positions, substantially asdescribed.

3. In the method of rolling, the steps con-- sisting of fastening aheated blank on a Work-supporting member, forcing against the Work a setof rolling elements, some of which are nearer the work-supporting memberthan others thereof, imparting relative rotation to the rollers andblank around a fixed axis and holding the rollers in a cage in the samerelative radial positions, sub stantially as described.

4. In the method of rolling, the steps consisting of fastening a heatedblank of substantially the same thickness throughout upon aWork-supporting member, forcing against the same a set of rollingelements, imparting relative rotation to the rolling elements and blankaround a fixed axis, and maintaining the rollers in a cage in the samerelative radial positions While rolling and spreading out the blank bythe circular travel of the rollers relative to the Work, substantiallyas described.

5. In the method of rolling, the steps consisting in supporting a blankon a Worksupporting member, forcing against the blank a set of rollingelements arranged to travel in overlapping annular paths upon relativerotation of the blank and rolling elements, and imparting relativerotation to the rolling elements and blank around a fixed axis,substantially as described.

6. In the method of rolling, the steps consisting in supporting a blankon a Work'supporting member, forcing against the blank a set of rollingelements, imparting relative rotation to the rolling elements and blankaround a fixed axis, and nolding the rolling elements in a cage in fixedrelation to the axis of rotation and to traverse overlapping annularpaths upon said relative rotation between the rolling elements andblank, substantially as described.

In testimony whereof I have hereunto set my hand.

EDIVIN E. SLICK.

